Cited by 446Memory and Neural MechanismsMultisensory perception and integrationNeuroscience and Neuropharmacology Research

Somatosensory and auditory convergence in the lateral nucleus of the amygdala.

Romanski, Lizabeth M., Clugnet, Marie-Christine, Bordi, Fabio, LeDoux, Joseph E.·1993·Behavioral Neuroscience

Abstract

Previous studies have shown that the lateral nucleus of the amygdala (AL) is essential in auditory fear conditioning and that neurons in the AL respond to auditory stimuli. The goals of the present study were to determine whether neurons in the AL are also responsive to somatosensory stimuli and, if so, whether single neurons in the AL respond to both auditory and somatosensory stimulation. Single-unit activity was recorded in the AL in anesthetized rats during the presentation of acoustic (clicks) and somatosensory (footshock) stimuli. Neurons in the dorsal subdivision of the AL responded to both somatosensory and auditory stimuli, whereas neurons in the ventrolateral AL responded only to somatosensory stimuli and neurons in the ventromedial AL did not respond to either stimuli. These findings indicate that the dorsal AL is a site of auditory and somatosensory convergence and may therefore be a locus of convergence of conditioned and unconditioned stimuli in auditory fear conditioning.

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Crossref · 10.1037/0735-7044.107.3.444

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  • Several lines of indirect evidence support the idea that this plasticity occurs as a result of a Hebbian mechanism through which depolarization of LA pyramidal neurons by the shock US coincident with weaker activation of the same cells by auditory CS inputs results in fear learning.

    “Several lines of indirect evidence support the idea that this plasticity occurs as a result of a Hebbian mechanism through which depolarization of LA pyramidal neurons by the shock US coincident with weaker activation of the same cells by auditory CS inputs results in fear learning (8–18).”

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Authors
Romanski, L. M., Clugnet, M.-C., Bordi, F., & LeDoux, J. E.
Affiliations
  • Yale University (US)
  • New York University (US)
Venue
Behavioral Neuroscience
Published
1993
Volume
107
Issue
3
Pages
444-450
ISSN
  • 0735-7044 (ISSN-L)
  • 1939-0084
OpenAlex
W2092568693
Cited by
446
References
38
Citations by year
2026: 7 · 2025: 9 · 2024: 10 · 2023: 12 · 2022: 12 · 2021: 12 · 2020: 19 · 2019: 12 · 2018: 15 · 2017: 12 · 2016: 19 · 2015: 17 · 2014: 24 · 2013: 15 · 2012: 16
FWCI
5.89
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioral Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Mental Health (MH 46516, R01MH046516, MH38774)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
lateral amygdala, auditory fear conditioning, single-unit activity, footshock, acoustic stimuli
MeSH terms
Amygdala, Animals, Attention, Brain Mapping, Conditioning, Classical, Evoked Potentials, Auditory, Evoked Potentials, Somatosensory, Fear, Male, Neural Pathways, Neurons, Nociceptors, Rats, Sprague-Dawley, Rats

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